Vaporizing device for internal-combustion engines.



J. S. DE ROOS. VPORIZING DEVICE FOR INTERNAL COMBUSTION ENGINES. APPLIOATION FILED M1127, 190e. j;

, that the eva Slllll DE ROGS, OF AMSTERDAM, NETHERLANDS.

no. ece/ies.

Specication of Letters Patent.

Patented Nov. il?, 1908.

Application filed January 27, 1908. Serial No. 412,8?2.

oratcdl superheafed and highly compressed state into 'the engine cylinder of internal ombustion engines, :1n-l chiefly consisting of an evaporating chamber arranged soparately in the head ol the cylinder. y f

rlf'he characteristic feature of the device is ating chamber which at the same tir e ms mixing chamber, is normally noty open to the interior of the cylinder. During the suction stroke, the

Y fuel is supplied to the chamber through a valve or forced in by a pump or in some other Way. Durng the compression stroke, compressed air enters the chamber from-the cylinder through an automatic valve. In that Way', already during the Whole compression stroke, an e aporatiom superheating and a preliminary combustion are obtained bringing about a considerable increase of pressure in the chamber. After the opening of a valve, the Whole quantity of fuel will, therefore, pass into the engine cylinder in a completely gasitled and superheated state. J

A construction' according to this invention is illustrated by way ox example in the accompanying drawing, in which Figure 1 is a vertical section, Fig. 2 a horizontal cross-section on line 'A-B of Fig. l, Figs. 33 and i hori'sontal,cross'sections respectively ou lines CMD and lil-F of Fig. l, Fig. 5 shows diagrammaticallv the construction and the arrangement of the valve gear dislr,

.The casing 1 is arrangedin the Well known manner in the cylinder cover 2. The bottom portion of the casing is provided 7with a cylindrical chamber 3. This chamber is closed at tl e bottom by a screw-plug 4 provided with a` perforation 5 and at` the same `time forms the seat :for the needle Valve' xspindle 6. I A The plu Ll is secured by means olf; cover Ah a counter sunk n stance nl resistance regulator con- -al pm d pointed at both ends and provided with a coarse flat screwthread. The casing is held in place by means of a cover or retaining parl: 29 having its loiver end of a conical shape. The cover 29 and 'the casing are provided in a suitable manner with three peii'orations intended to act respectively as a fuel supply conduitJ a guide for the needle valve spindle G and a perforation for the air valve casing 1G. The valve spindle il is guided by means ci stuliiug box arranged at the top in the co er 29,aiid in a casing 11 arranged. ou the s cover. The said valve spindle is prelie provide with a lined stop Y helical spring arranged in the casing i. has

the constant tendency to force the needle point ofthe spindle G into the perforation of the screw plug forming its scat. rlhe air valve casing l0 is provided with an au-- tomatc valvc`13 which closes the communi-- cation between che cylindrical chamber 3 and the engine cylinder 28 through two con duits lll and 15 formed in the casing 1. ln the conduit 14 moreover a ball-valve 30 is provided to close the communication between the conduit and the cylinder.

The fuel supply conduit 9 communicates by a passage 16 with the cylindrical chamber 3 and is closed by a second needle valve 17.l The luel supply pipe is connected to the fuel supply conduit in Well known manner, and moreover, arrangement` is also made for the escape 0'l` air- (Fig. 1). Thespindle 17 of the needle valve is guided vin suitable manner in the casing 1 and in the cover Q9, and under the influence of spring pressure. keeps the conduit 1G closed.

The spindle G and the spindle 1l are oporated in the 'following manner'z-rt suitable level, not given however in the dimm ing, the cover Q9 is prrn'ided with o hell crank lever 18 which is operated in a suitable manner' by a roller 19 and the valve gear cam disk 2O (Fig, 5), The end of the crank lever surrounds the valve spindle (3 and in normal position is lin contact with the stop 12 of the same. Let the different positions which the roller can occupy on the circumference of the volvo gear cam disk be marked l to V. The valve gear cam disk itself is provided on its lperiphery -with a short projection 21, a longer projection 9 'and a recess 23, On the casing l1 arranged on the pressure part is rotatably mounted short lever 24; (Figs. 1 and 2) ot which one end carries a proJection 25 opposite Awhich loo 5g- 4 ooe.

the bell crank lever 18 provided'Wit-h a.

boss 26, While the other end of tie short lever 24 engages with the spindle 17 The latter. aluayenornxally keeps the fuel 2f sage 16 closed by means of a helical spring. rh. l the piston 537 is shown in its hip-liest position in the Working chamber The Working;` of the new device is as followsz--rlhe piston is supposed to be at its highest position in the cylinder, the -fuel conduit 9 is assinned to be filled in Well known manner and any air reniovcd and all the valves closed. During: vsuction stroke, the positively operated valve 6 is raised till about the middle of the stroke7 and thus opens communication between the cylinder and the cylindrieal chamber 3 that 'a rarefaction of the air in the aid cl1aniber- 8 is brought about. Then the Valve ti closes and the valve 17 opens, whereby a sinall quantity of fuel is ad During; this niitted into the 'chamber o.

second portion of the suction strolke the air admission valve to the cylinder is opened, At the end of the suction stroke the fuel sage 1G is again closed by the fuel needle va ve. The valve spindle 17 may be controlled in Well known manner, not shown in the drawing, by a governor, so that the fuel` supply is regulated according to requirements. During` the subsequent compression stroke, the needle Valves@ and 17 remain 'in their closed position. A portion of the heated compressed air after lifting the ball Valve 30 escapes then through the passage 14, opens the automatic valve 13 and penetrates through the passage l5 into the cylin drieal chamber 3. rllhis incoming air becomes thoroughly mixed with the fuel contained in the chamber 3 and brings about its complete evaporation, superheating and pre-1 liminary combustion.. This vaporizing re sults in such a great increase of pressure that the automatic valve 13 is again closed and remains closed during further compression until the press-ure in the cylinder' or con init space le. becomes greater than the pressure in the chamber Then another considerably hotter air-jet is forced into the chauibe and the fuel mixture is heated to a still greater extent. The object of the bell-voire i,

8() 1s to prevent the highlyY heated air pass ing back through the conduit space lll. These injections of air are repeated up to the end of the compression stroke and bring about a complete evaporation and superheating, and more partieularly4 the last iujections eeet a preliminar f combustion of the quantity of fuel in the chamber 3i whereby the pressure and the tempo-rature in the same are increased to such an erf: ent as to considerablg7 exceed 'those in the Working chamber. A preliminary combustion of the fuel may be effected also by an igniter arranged in the chamber 3.

'projection 25 (Fig. l.)

At the dead point of the piston the posi-- tively control d t' is raised, and the completely evaporatedy superheatcd and pre liniinarily burned quanti@y of gas. owing to its considerably greater igiressure, escapes through the perforation. and through the resistance regulator El arranged in the cover 7,." into the Working chamber. Then a ecmhustion tak s place in accordtuice with the constant. pressure or Aexplesion process. ln order completely7 to balance 'the excess of pressure in the chamber the pin G is closed onliJ at the end of the combustion. Stroke. Uvingto the fuid piu remaining raised,I the chamber 3 receives a rinsing of the air coni tained behint'i the bell vz life in the chamber le. The exhaustof the combustion gases is effected` in the Well known manner. The fuel may also be introduced during the conivpression stroke into the euainber The positive movement of the two needle `values takes place in the following manner it the beginningA of the suction stroke the two valves under nthe. action of their springs are closed and the roller lt) is in the dotted position lf (Fig. The short lever @l is in contact with the boss :26, by means of its During the suction stroke the cani disk rotates in the direction of the hands of a Watch the short projection 2l raises the roller i9 and therefore the bell crank lever 18whioh, by means of the sten on its spindle l2 raises the spindle About the middle of the suction stroke the roller 19 arrives into the position V whereupon the valve spindle 6 is lowered and the pas save closed.

hiring the further increment of the roller i9 that is to say,v during thesecond portion of the suction stroke, the salitl roller 't1 vels along the recess whereupon the lever i8 is moved downwards, the spindle G is left in place, but the boss 26 on the crank lever depresses the ylinger 25 whereupon the left hand end. of the lever 24. and consequently the spindle fuel pin 17 are moved upivards. At the end of the suction stroke the roller 19 is again in its norn'ial position (position ll) and the fuel needle Valve again closed. crank lever roin the eead point lll the bell all@ l; and with t lon er proie/it 'n co1 the earn dish, a

olie, so thatthe conescape into the Vil that to sayE Yr Se. ,n t le 5, end -of the we o l lie. the crank lei/er 18 brought bock to its original loositici l and during tue uitwenient from lV to l While the expulsion of t, e combustion tal-:es )lace 'the two needle valves 6 and itl are held closed by the pressure of the springs. @Wing to the complete Vaporization, superheating and preliminary combustion ,of the fuel which is strongly su ierheated owing to the of hot air place dating sp idle ra edbj;v they during during tne compression stione to the cylinder and provided with n, in"

the compression srolie l Cms very enplosive mixture, the advantage is ootni that any kind of el inclu ng heeey light ones and the like niej; used. `Pllen the IniXtni-e passes into the cylinder, a. coinplete combustion et ence takes piece and in this Way the liigliest teinpeintnie obtained et the moment of admission o combustion engines.

lvllniti claim :is my invention and to seein-e by Letters Patent is:M

l. The combination ei en internal Coinlnistion engine eoinpi' ng e eylindei i ming zi piston to operate therein7 1nd n erasing provided with n mixing cli lier, en outlet valve foi' normally elosin Communication between said elianiloei :and cylinder, ijnlve providing ineens for admitting fuel into 'the chamber, Ineens foi* openin Valve during n portion il of the piston to iednee "fl e seid Chamber, ineens to? valve after the of x i to admit n eliaige of if'nel into se into said clialnbei7 and ineens said outlet Valve to dise'nag'; t superheated from seid ene-nib cylinder. y

2. The combination o1"- zin inteinsi coin-- lmstion engine comprising e eyiindeiq inw/ing n piston to operate tlieiein, n easing etiinelied lf chamber, an Aoutlet Valve for noinieily Clos ing,r communication between seid Ginn-libe? and cylinder, s valve providing for admitting fuel into said ehninnen en mitoniatically opeinting sii' *valve j ifoviding means for conducting heated ai? iliona the cylinder during tlie compression sti-oke of its iiston `into said chamber, end `telve con tro ing inetiienism for opening outlet mit Charge of fuel into said chamber, said Valve mechanism serving also to open said outlet valve preparatory to the power stroke of the piston 'to discharge the veporized and snperheeted from said Climntier into llie e5 indeix The combination of an internal com lnistion en eine Comprising eylindei having :i piston to operate tlierein, :i easing; fitted to said Cylindery and provided with n mixing elnnnlyei', :in outlet valve normally closing Communication between seid elmniliei' 51nd cylindei, a fuel valve 'for conducting ii change of fuel into said Chambon, en nii' valve for eutonnitienliy admitting* eiiaiges ot nested nii from tlie eyiinilei' dniing the coin- Y sion stroke of the piston into said chain-1 i er, anni dist:i e lever operatively connected to the outlet vulve for opening it during n poition of the suction. stroke of the piston and diningtlie power stiole thereof, said ievei4 l'ieing; contiolled by said Cani, and e second lever operatively Connected to the fuel Ynxfe end nimnged to ne engaged by the lever Fist mentioned to open the 'linel valve site? die Closing oi the outlet Ynlve upon the suction. stroke o1 the piston.

4i. The coinl'iintition of :in internal Coinbnstion engine Comprising a Cylindei" having :i piston to @peinte-therein, a easing fitted into the cylinder and pio=.'ided with e niix ing; chamber lia-ving pnssegevfoiming coniinunieetion between it and the cylinder, e. outlet Valve normally closing said passage, a nel inlet valve for conducting changes ot fu i seid chamber, ineens for eondiieting sir into seid eliaVA ibei to :i superbes ted explosive mixture-therein, and :1 resistance i'egnleto arranged in said outlet passage lietween the mixing Chamber and cylinder, id

regulator comprising o pin pointed at. envli end provided with n peripheral tlnentl adnpied to iinpinge upon the ons escaping' :from saidchanioei' :ind thus retard the pas of tile niiod into the cylinder.

,in testiinonj,7 whereof l lmve signed .my nein-e to tliis'speciiieetion in tne presence ol' two subscribing Witnesses.

JLCUBUS SiiiiUN DE ROOS.

Witnesses THOMAS HERMAN Us Vnnimvnf Henny H. Mone/in, 

